From 11e62a8fabd003352e852e74e1b64a437fd908c6 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 19 Jul 2012 11:17:49 +0400
Subject: [PATCH] btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Reading git-format-patch failed